Aldeyra Therapeutics, Inc ALDX

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Aldeyra Therapeutics, Inc. - Common Stock · Company · Nasdaq · Healthcare / Biotechnology

Paper trade (simulated — no real money)

Fill: USD 0.6497 · FX 1 USD = 1.277900 SGD · about SGD 0.8303 per unit

Sign in to practise with simulated trades before investing real money. USD fills are converted into the SGD portfolio at the displayed rate.

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 5.24 → 0.65 · -87.6%
5.6203.1330.645 1 2 3 4 5 6 7 8 9 10,11 12 13 14 15 16 17 18 Oct 25Jan 26Apr 26Jul 26Oct 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 24 Oct 2025 — 25 Oct 2026 (Last year)

Daily Nasdaq prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

Weekend
Weekend
0.6300 0.6544 0.6035 0.6497 821,553
0.6700 0.7350 0.6280 0.6450 717,800
0.7380 0.7500 0.6600 0.6700 596,700
0.6540 0.7480 0.6500 0.7340 1,646,900
0.7040 0.7200 0.6560 0.6650 861,700
Weekend
Weekend
0.7400 0.7400 0.6500 0.7000 1,810,300
0.7700 0.8030 0.7250 0.7370 1,233,500
0.8800 0.8990 0.7890 0.7900 1,578,400
0.8900 0.9100 0.8650 0.9000 1,456,500
0.9200 0.9400 0.8820 0.9060 1,340,300
Weekend
Weekend
0.9400 0.9700 0.9150 0.9160 699,000
0.9600 0.9700 0.9120 0.9480 1,178,300
0.9100 0.9670 0.8810 0.9590 1,287,000
0.9500 0.9900 0.8620 0.9160 8,232,300
1.1800 1.1850 0.8980 0.9240 7,026,300
Weekend
Weekend
1.3100 1.3100 1.1500 1.1700 2,269,900
1.2600 1.3050 1.1950 1.2900 1,211,300
1.3400 1.3500 1.2200 1.2300 1,650,600
1.1700 1.4400 1.1600 1.3200 5,448,800
18 · 8-K Pre-market · 07:01 ET 8-K ↗
1.1800 1.2200 1.1500 1.1600 1,019,700
Weekend
Weekend
1.2300 1.2800 1.1950 1.2050 644,700
1.3500 1.3500 1.2200 1.2200 835,100
1.4000 1.4000 1.3300 1.3500 630,100
1.3700 1.4000 1.3510 1.3950 428,600
1.3700 1.3900 1.3200 1.3500 494,800
Weekend
Weekend
1.4000 1.4000 1.3450 1.3600 366,900
1.3900 1.4350 1.3700 1.3800 394,900
1.3800 1.4000 1.3550 1.3700 791,900
1.4500 1.4500 1.3450 1.3700 833,000
1.3500 1.4900 1.3480 1.4600 1,167,300
Weekend
Weekend
1.4800 1.4800 1.3300 1.3400 1,565,400
1.4800 1.5050 1.4600 1.4600 552,100
1.5300 1.5350 1.4950 1.5000 544,000
1.4700 1.5500 1.4700 1.5400 720,600
No trading
Weekend
Weekend
1.4700 1.4900 1.4600 1.4800 483,900
1.4800 1.5110 1.4600 1.4800 568,900
1.5100 1.5400 1.4600 1.4900 498,200
1.4600 1.5000 1.4550 1.4900 461,700
1.5100 1.5100 1.4650 1.4800 495,100
Weekend
Weekend
1.5200 1.5600 1.4800 1.4850 548,000
1.5700 1.5810 1.5250 1.5400 277,000
1.5400 1.5750 1.5200 1.5600 478,400
1.5200 1.5600 1.5000 1.5500 447,000
1.5300 1.5450 1.4600 1.5200 531,900
Weekend
Weekend
1.5000 1.5950 1.4750 1.5200 1,098,700
1.5700 1.5750 1.4950 1.5000 942,900
1.5900 1.6000 1.5400 1.5800 982,200
1.5400 1.5950 1.5050 1.5500 702,800
1.5500 1.5800 1.5250 1.5600 789,800
Weekend
Weekend
1.4900 1.5700 1.4450 1.5600 831,000
1.5300 1.5700 1.4400 1.4400 1,357,000
1.5100 1.5800 1.5000 1.5200 939,400
1.5300 1.5400 1.5000 1.5100 473,900
1.5500 1.5650 1.5100 1.5100 867,600
Weekend
Weekend
1.5600 1.6150 1.5250 1.5500 1,171,200
17 · 10-Q After-hours · 16:02 ET 10-Q ↗
1.6000 1.6150 1.5300 1.5900 579,200
1.5500 1.6300 1.5500 1.6000 822,600
1.5200 1.6000 1.5000 1.5500 975,500
1.5500 1.5500 1.4900 1.5300 784,800
Weekend
Weekend
1.6200 1.6300 1.5200 1.5400 576,800
16 · 8-K After-hours · 17:07 ET 8-K ↗
1.6300 1.6700 1.5950 1.6000 548,900
1.5800 1.6300 1.5300 1.6100 745,400
1.6200 1.6200 1.4900 1.5800 916,800
1.5300 1.6100 1.5300 1.5850 1,232,100
Weekend
Weekend
1.6000 1.6000 1.4750 1.5200 1,126,300
1.7000 1.7200 1.5400 1.5500 1,414,500
1.7500 1.7550 1.6600 1.7000 1,086,600
1.7100 1.7800 1.6900 1.7500 1,107,700
1.7000 1.7600 1.6500 1.7000 1,130,900
Weekend
Weekend
1.7000 1.7400 1.6500 1.6900 1,170,600
1.8400 1.8500 1.6000 1.7200 2,597,200
15 · 8-K After-hours · 16:46 ET 8-K ↗
1.9200 1.9650 1.9000 1.9200 913,100
1.9500 1.9800 1.9000 1.9300 837,600
2.0300 2.0600 1.9000 1.9300 1,377,400
Weekend
Weekend
2.2800 2.2850 2.0600 2.0700 1,227,300
2.1400 2.3100 2.0600 2.3000 2,084,700
2.2200 2.2400 2.0650 2.1300 3,097,500
2.2800 2.3500 2.1900 2.2300 2,137,100
2.2500 2.3600 2.2090 2.2800 1,199,800
Weekend
Weekend
No trading
2.4100 2.5300 2.2500 2.2700 2,116,700
2.1300 2.5300 2.1050 2.4300 3,444,000
2.0500 2.1600 2.0500 2.1300 2,185,300
1.8400 2.0850 1.8200 2.0500 1,917,700
Weekend
Weekend
1.8200 1.8800 1.7100 1.8300 6,078,800
1.9400 1.9600 1.7550 1.8000 2,047,700
2.0600 2.0900 1.8450 1.9000 2,126,000
2.0000 2.2100 1.9990 2.0200 2,434,600
1.9500 2.1500 1.9500 2.0500 1,690,800
Weekend
Weekend
No trading
1.8700 1.9900 1.8700 1.9600 2,185,000
1.7700 1.9200 1.7700 1.8300 1,289,100
1.7700 1.8400 1.7450 1.7800 926,900
1.8100 1.8330 1.7400 1.7600 616,600
Weekend
Weekend
1.7100 1.7750 1.6950 1.7600 830,700
1.6800 1.7300 1.6600 1.7100 1,199,800
1.7100 1.8000 1.6500 1.6900 916,700
14 · 8-K Next filing day · accepted 09 Jun, 20:30 ET 8-K ↗
1.7600 1.8300 1.6800 1.7200 961,300
1.8300 1.9650 1.7300 1.7400 1,788,400
Weekend
Weekend
1.7600 1.7600 1.6150 1.6300 981,500
1.8600 1.9300 1.7450 1.7600 1,073,800
1.6400 1.8700 1.5900 1.8600 2,027,700
1.6700 1.6870 1.5800 1.6400 959,600
1.7400 1.7400 1.6200 1.6600 786,600
Weekend
Weekend
1.7400 1.7500 1.6700 1.7500 579,500
1.7100 1.7900 1.6900 1.7500 1,221,900
1.7500 1.7800 1.6800 1.7100 896,800
1.5400 1.7800 1.5300 1.7800 1,975,900
No trading
Weekend
Weekend
1.5700 1.6150 1.5300 1.5500 472,900
1.5200 1.5900 1.5100 1.5900 629,100
1.5400 1.5700 1.5050 1.5500 840,100
1.5800 1.5800 1.5200 1.5400 710,800
1.6700 1.6900 1.5800 1.6000 1,043,900
Weekend
Weekend
1.6300 1.7050 1.6000 1.6800 1,313,800
1.7100 1.7100 1.6350 1.6600 709,700
1.7000 1.7200 1.6500 1.7000 1,331,300
1.7500 1.8050 1.7000 1.7100 718,600
1.7200 1.7700 1.7100 1.7600 713,200
Weekend
Weekend
1.7000 1.7700 1.7000 1.7300 827,600
13 · 10-Q After-hours · 16:02 ET 10-Q ↗
1.7300 1.7470 1.6850 1.7300 646,000
1.7000 1.8600 1.6900 1.7400 1,148,100
1.6300 1.7300 1.5900 1.7200 1,046,300
1.5700 1.6800 1.5700 1.6200 791,100
Weekend
Weekend
1.5200 1.6000 1.5090 1.5900 751,400
12 · 8-K Pre-market · 08:00 ET 8-K ↗
1.5100 1.6000 1.4900 1.5200 1,179,200
1.5500 1.5900 1.4700 1.5000 706,300
1.5700 1.6200 1.5600 1.5700 726,300
11 · DEFA14A After-hours · 16:13 ET DEFA14A ↗ 10 · DEF 14A After-hours · 16:10 ET DEF 14A ↗
1.5400 1.6000 1.5200 1.5800 1,198,200
Weekend
Weekend
1.5800 1.5900 1.5100 1.5500 1,481,800
1.7000 1.7000 1.5700 1.6000 1,510,600
1.6800 1.7100 1.6500 1.7000 1,079,900
1.7900 1.8350 1.6700 1.6800 1,583,100
9 · 8-K After-hours · 17:00 ET 8-K ↗
1.7880 1.8150 1.7510 1.7800 980,800
Weekend
Weekend
1.8100 1.8600 1.7900 1.8000 1,303,800
1.8200 1.8300 1.7100 1.8000 1,309,600
1.8000 1.8700 1.7700 1.8300 1,825,300
1.8000 1.8900 1.7500 1.7900 2,032,000
1.7200 1.8350 1.7000 1.8000 1,489,100
Weekend
Weekend
1.6000 1.8080 1.5980 1.7800 2,256,900
1.5700 1.6250 1.5200 1.5900 2,649,100
1.5900 1.6200 1.5500 1.5700 1,333,500
1.5100 1.5600 1.4800 1.5200 1,303,600
1.6600 1.6600 1.5200 1.5400 2,049,500
Weekend
Weekend
No trading
1.6900 1.7200 1.6300 1.6600 1,820,500
8 · 8-K After-hours · 16:25 ET 8-K ↗
1.7100 1.8700 1.6800 1.6800 4,706,000
1.7300 1.8100 1.6700 1.6900 2,395,400
1.7600 1.7800 1.6800 1.6800 1,900,500
Weekend
Weekend
1.8100 1.8400 1.7550 1.7700 2,608,700
1.8100 1.8760 1.7300 1.8400 2,979,800
1.9800 2.0200 1.7600 1.8500 4,540,700
2.2500 2.3300 1.8600 1.8700 7,333,300
1.8800 2.3200 1.8250 2.2300 7,071,600
Weekend
Weekend
1.9300 2.0300 1.7900 1.8100 10,645,100
1.3900 1.8500 1.3700 1.8300 12,004,900
1.2000 1.5600 1.1600 1.4200 16,700,900
1.1200 1.5100 1.0700 1.2400 52,525,600
7 · 8-K Pre-market · 08:39 ET 8-K ↗
4.3800 4.4500 4.0650 4.2300 3,732,800
Weekend
Weekend
4.6900 4.7200 4.0100 4.1250 3,399,700
4.9900 4.9900 4.5150 4.6700 2,066,200
5.1000 5.1000 4.7400 4.9400 1,622,000
5.3500 5.6000 4.9800 5.0100 1,610,400
4.8000 5.3000 4.7500 5.2600 1,376,600
Weekend
Weekend
4.6000 4.8800 4.4100 4.8000 1,215,700
5.1200 5.1200 4.3650 4.6500 2,607,600
5.1800 5.3950 5.1500 5.1950 765,500
5.5000 5.5200 5.0550 5.1100 871,500
5.4000 5.7400 5.3150 5.6200 881,300
Weekend
Weekend
6 · 10-K After-hours · 16:47 ET 10-K ↗
5.4600 5.5020 5.3050 5.4600 1,016,200
5.4700 5.5350 5.3500 5.5000 939,400
5.2400 5.6200 5.2100 5.4900 1,267,200
4.9700 5.3400 4.9550 5.2100 1,045,600
4.9100 5.1000 4.8500 4.9900 436,400
Weekend
Weekend
5.0200 5.0800 4.9090 4.9500 483,400
5.0100 5.1300 4.9200 5.0800 726,800
5.1500 5.1900 4.9100 5.0200 660,100
5.2400 5.3500 5.1250 5.1500 599,400
No trading
Weekend
Weekend
5.2900 5.4400 5.1500 5.2800 831,700
5.3500 5.5600 5.1550 5.2500 1,067,800
5.5000 5.5200 5.2800 5.3200 910,700
5.5700 5.6700 5.4500 5.4800 588,400
5.5300 5.6550 5.4100 5.5600 365,200
Weekend
Weekend
5.2100 5.6100 5.1500 5.5300 974,100
5.1900 5.4400 5.0750 5.0900 607,500
5.4500 5.4790 4.9200 5.2200 935,800
5.4500 5.6000 5.3100 5.4100 556,400
5.3200 5.5900 5.2500 5.4300 356,000
Weekend
Weekend
5.4500 5.9300 5.2650 5.3600 742,900
5.4200 5.4400 5.2250 5.3200 525,400
5.5500 5.5500 5.3650 5.4200 595,700
5.2500 5.6500 5.2500 5.5400 865,300
5.1600 5.3100 5.0520 5.2300 620,300
Weekend
Weekend
5.2100 5.4300 5.0910 5.1900 1,256,100
5.0100 5.3900 4.9650 5.2200 958,400
4.7400 5.1300 4.7350 4.9900 1,192,900
4.5200 4.8250 4.3900 4.7500 1,020,000
No trading
Weekend
Weekend
4.3900 4.7400 4.2200 4.6300 1,634,900
4.2800 4.4500 4.2000 4.4100 835,600
4.1400 4.2950 4.0800 4.2400 593,900
4.1500 4.1550 3.9550 4.1400 527,500
4.0700 4.1900 3.9450 4.1300 617,500
Weekend
Weekend
4.2400 4.3270 4.0100 4.1100 643,500
4.1100 4.2000 4.0450 4.1800 548,700
4.0800 4.2700 4.0600 4.1600 883,400
4.2500 4.3140 4.0200 4.0600 1,118,400
4.7000 4.7590 4.1400 4.2400 1,213,500
Weekend
Weekend
5.1200 5.2050 4.6500 4.6700 1,116,600
No trading
5 · 8-K After-hours · 17:07 ET 8-K ↗
5.1700 5.2550 5.1100 5.1800 554,200
5.1600 5.2600 5.0350 5.1500 507,700
5.2600 5.3100 5.1300 5.1700 418,200
Weekend
Weekend
5.2800 5.3260 5.1000 5.3100 508,600
No trading
5.0500 5.3490 4.9780 5.2800 419,900
5.5000 5.5000 5.0050 5.0500 1,100,100
4.9400 5.7450 4.9000 5.5400 1,456,700
Weekend
Weekend
5.0200 5.1190 4.9300 4.9600 822,700
5.2700 5.6750 5.0000 5.0100 1,768,700
5.3750 5.4300 5.1400 5.2500 2,225,800
3.9500 5.4200 3.9400 5.3100 8,519,600
4 · 8-K Next filing day · accepted 15 Dec, 19:49 ET 8-K ↗
4.6200 4.7000 3.9700 3.9900 2,817,500
Weekend
Weekend
4.5900 4.9050 4.5100 4.5400 1,301,500
4.8100 4.8350 4.5650 4.5900 1,136,400
4.7700 4.8100 4.6750 4.7900 838,400
4.9400 4.9900 4.7750 4.7900 1,706,000
4.7500 5.0400 4.7500 4.9500 1,267,100
Weekend
Weekend
4.8800 4.9800 4.6700 4.7000 822,500
4.8900 5.0200 4.8100 4.8800 895,100
4.9700 5.0500 4.7100 4.8700 1,496,300
5.2200 5.2500 4.8400 4.8700 1,680,700
5.4200 5.4580 5.1850 5.2400 917,300
Weekend
Weekend
5.6000 5.6800 5.4500 5.4800 626,800
No trading
5.2700 5.6450 5.2300 5.5900 1,326,700
5.2500 5.3450 5.1750 5.2600 1,115,800
4.9700 5.3000 4.9500 5.2300 864,700
Weekend
Weekend
4.7100 5.0650 4.6950 4.9600 647,700
4.9900 5.0400 4.7100 4.7300 560,400
4.8900 4.9300 4.7250 4.8600 504,600
4.9500 4.9900 4.7950 4.9100 613,000
5.0500 5.1350 4.8500 4.9500 622,200
Weekend
Weekend
4.9400 5.1850 4.9200 5.0500 580,200
5.2700 5.2700 4.9850 5.0200 705,500
3 · 8-K Pre-market · 07:00 ET 8-K ↗
5.2100 5.3500 5.1800 5.3000 858,000
5.1300 5.2850 5.0000 5.2300 526,400
4.7400 5.1500 4.7100 5.1300 1,084,100
Weekend
Weekend
4.8100 4.8400 4.5250 4.6900 644,800
4.9400 4.9500 4.8000 4.8100 626,300
2 · 10-Q After-hours · 16:16 ET 10-Q ↗
4.9200 5.0100 4.8400 4.9300 370,400
5.1400 5.2700 4.8900 4.9200 558,200
5.0700 5.2400 5.0400 5.2300 639,700
Weekend
Weekend
5.0100 5.1100 4.8500 5.0700 568,800
5.0100 5.1500 4.8950 5.0300 1,045,800
5.1100 5.2250 5.0000 5.0550 491,600
5.1300 5.3500 4.6960 5.1400 1,259,700
1 · 8-K Pre-market · 07:00 ET 8-K ↗
5.2800 5.4000 5.1800 5.2300 510,800
Weekend
Weekend
5.2500 5.2850 5.1800 5.2400 310,300

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

18 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:01 ET Summarise
17 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:07 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:46 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 09 Jun, 20:30 ET Summarise
13 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:00 ET Summarise
11 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:13 ET Summarise
10 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:00 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:25 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:39 ET Summarise
6 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:47 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:07 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 15 Dec, 19:49 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:00 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:16 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:00 ET Summarise